How do I make myself look dead?

My friends birthday party is coming up, and I'm telling a scary story that I told last year. When I told it last year, I read the words, "There was a noise at the back of the house." Then a noise really came from the back of the house! XD So I really want to top how scared they were. The story has it so the friends die one at a time. One dies in the bathroom. So I want to stage it so it looks like the 'psycho shapeshifter' has killed me. How can I make myself look dead with makeup quite quickly? I want to also stage it to look like I was strangled, for that is how the killer did it im the story. Please help! Thanks! :)